Added snippets to unity plugin readme

docs/zt_llapi_unity.md

@@ -6,7 +6,8 @@ We've tried to replicate the behavior of the Unity3D LLAPI to make using ZeroTie
 
 To start things off, go check out [ZeroTierSockets_Demo.cs](). Here are some examples of how to use the `ZeroTierNetworkInterface`:
 
-## Server example
+## Using ZeroTier Sockets API
+### Server example
 ```
 Thread connectThread = new Thread(() => { 
 	// Create ZeroTier-administered socket
@@ -38,10 +39,9 @@ Thread connectThread = new Thread(() => {
 });
 connectThread.IsBackground = true;
 connectThread.Start();
-	}
 ```
 
-## Client example
+### Client example
 
 ```
 Thread connectThread = new Thread(() => {	
@@ -59,8 +59,8 @@ Thread connectThread = new Thread(() => {
 
 
 ***
-
-## Creating a host and receiving data
+## Using the ZeroTier Low-level API (LLAPI)
+### Creating a host and receiving data
 
 ```
 public class MyObject
@@ -98,7 +98,7 @@ public class MyObject
 }
 ```
 
-## Connecting to a server and sending a message
+### Connecting to a server and sending a message
 
 ```
 public class MyObject